<?php
namespace app\business\controller;
use app\business\model\BusinessLogin;
use app\business\model\BusinessTable;
use app\business\model\BusinessTableClassify;
use think\Controller;
use app\business\controller\Base;
use think\Session;

class Tuikuan extends Controller
{

     //=======【基本信息设置】=====================================


    //商户支付密钥Key
    protected $KEY = 'FCF7E59E2C6EC2EB890551B7171CB2F2';

    protected $SSLCERT_PATH = '/webroot/app/eat/public/cret/apiclient_cert.pem';//证书路径
    protected $SSLKEY_PATH =  '/webroot/app/eat/public/cret/apiclient_key.pem';//证书路径





    public function index()  //此处id为 订单id
    {


        $order_id = input('get.order_id');

        $agent_id = input('get.agent_id');
        // 获取订单详情
        $order = db('order')->find($order_id);

        if ($order['is_comment'] !== 0) {
            return 2;die;
        }else{
        //店铺信息
         $setting = db('setting')->find($agent_id);
        //对外暴露的退款接口
          $this->wxrefundapi($order,$setting);
            $owhere['id'] = $order_id;
            $owhere['is_comment'] = 5;

            $static = db('order')->update($owhere);
            return $static;
        }
    }


    private function wxrefundapi($order,$setting){


        //在session中获取agent_id   青岛中直接定义  agent_id = 4

        //var_dump($_SESSION);die;



        //var_dump($setting);die;
        //通过微信api进行退款流程
        $parma = array(
            //appid
            'appid'=> $setting['appid'],
            //商户id
            'mch_id'=> $setting['mch_id'],
            //随机字符串
            'nonce_str'=> $this->createNoncestr(),
            //商户订单号
            'out_refund_no'=> $order['tknum'],

            'out_trade_no'=> $order['order_num'],
            //订单金额
            'total_fee'=> $order['allPayMoney'] * 100,
            //退款金额
            'refund_fee'=> $order['allPayMoney'] * 100,

            'op_user_id' =>$setting['mch_id'],
        );
        $parma['sign'] = $this->getSign($parma);

        $xmldata = $this->arrayToXml($parma);
//var_dump($xmldata);die;
        $xmlresult = $this->postXmlSSLCurl($xmldata,'https://api.mch.weixin.qq.com/secapi/pay/refund');

        $result = $this->xmlToArray($xmlresult);

        //var_dump($result);die;
        return $result;
    }

        /*
     * 对要发送到微信统一下单接口的数据进行签名
     */
    protected function getSign($Obj){
         foreach ($Obj as $k => $v){
          $Parameters[$k] = $v;
         }
         //签名步骤一：按字典序排序参数
         ksort($Parameters);
         $String = $this->formatBizQueryParaMap($Parameters, false);

         //签名步骤二：在string后加入KEY
         $String = $String."&key=".$this->KEY;
         //签名步骤三：MD5加密
         $String = md5($String);
         //签名步骤四：所有字符转为大写
         $result_ = strtoupper($String);
         return $result_;
     }

     protected function xmlToArray($xml){
        $array_data = json_decode(json_encode(simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA)), true);
        return $array_data;
    }

         /*
     *排序并格式化参数方法，签名时需要使用
     */
    protected function formatBizQueryParaMap($paraMap, $urlencode)
    {
        $buff = "";
        ksort($paraMap);
        foreach ($paraMap as $k => $v)
        {
            if($urlencode)
            {
               $v = urlencode($v);
            }
            //$buff .= strtolower($k) . "=" . $v . "&";
            $buff .= $k . "=" . $v . "&";
        }
        $reqPar;
        if (strlen($buff) > 0)
        {
            $reqPar = substr($buff, 0, strlen($buff)-1);
        }
        return $reqPar;
    }

        //数组转字符串方法
   protected function arrayToXml($arr){
        $xml = "<xml>";
        foreach ($arr as $key=>$val)
        {
            if (is_numeric($val)){
                $xml.="<".$key.">".$val."</".$key.">";
            }else{
                 $xml.="<".$key."><![CDATA[".$val."]]></".$key.">";
            }
        }
        $xml.="</xml>";
        return $xml;
    }

        /*
     * 生成随机字符串方法
     */
    protected function createNoncestr($length = 32 ){
         $chars = "abcdefghijklmnopqrstuvwxyz0123456789";
         $str ="";
         for ( $i = 0; $i < $length; $i++ ) {
          $str.= substr($chars, mt_rand(0, strlen($chars)-1), 1);
         }
         return $str;
         }

    //需要使用证书的请求
        function postXmlSSLCurl($xml,$url,$second=30)
        {
            $ch = curl_init();
            //超时时间
            curl_setopt($ch,CURLOPT_TIMEOUT,$second);
            //这里设置代理，如果有的话
            //curl_setopt($ch,CURLOPT_PROXY, '8.8.8.8');
            //curl_setopt($ch,CURLOPT_PROXYPORT, 8080);
            curl_setopt($ch,CURLOPT_URL, $url);
            curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,FALSE);
            curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,FALSE);
            //设置header
            curl_setopt($ch,CURLOPT_HEADER,FALSE);
            //要求结果为字符串且输出到屏幕上
            curl_setopt($ch,CURLOPT_RETURNTRANSFER,TRUE);
            //设置证书
            //使用证书：cert 与 key 分别属于两个.pem文件
            //默认格式为PEM，可以注释
            curl_setopt($ch,CURLOPT_SSLCERTTYPE,'PEM');
            curl_setopt($ch,CURLOPT_SSLCERT, $this->SSLCERT_PATH);
            //默认格式为PEM，可以注释
            curl_setopt($ch,CURLOPT_SSLKEYTYPE,'PEM');
            curl_setopt($ch,CURLOPT_SSLKEY, $this->SSLKEY_PATH);
            //post提交方式
            curl_setopt($ch,CURLOPT_POST, true);
            curl_setopt($ch,CURLOPT_POSTFIELDS,$xml);
            $data = curl_exec($ch);

            //返回结果
            if($data){
                curl_close($ch);
                return $data;
            }
            else {
                $error = curl_errno($ch);
                echo "curl出错，错误码:$error"."<br>";
                curl_close($ch);
                return false;
            }
        }

}